After her best friend Lilly (Amanda Seyfried) is killed and her dad Keith (Enrico Colantoni) loses his job as sheriff over the handling of the murder investigation, Veronica uses her PI skills to discover the truth behind Lilly’s death. This arc lasts the entire 22 episodes, as does Veronica’s quest to discover what happened to her at a party last year. In the meantime, she’s solving mysteries big and small for classmates and community members, plus dealing with the typical high school angst. A smart, addictive show.